Disconnecting switch mechanism



Feb. 28, 1933.` H- J* CRABBS 1,899,384

DISCONNEC-TING SWITCH MECHANISM Filed Feb. 17. 1928 TJ n) I INVENTOR Herberffcrabbs.

2 at its ends, to the Vlatch members 23 and 24,

as indicated in Fig. 2, the spring serving to draw the outer ends of the latch members toward one another in order that a shoulderr 29, formed on each vof the latch members, shall the shoulder 21 ofthecatch 19toretain the blade 13 in closed position.

Each latch is provided with a shoulder 31l (Figs.- 1 and `4) that seats upon theputer end of the catch 19 when the switch-bladen) -is in closed position, andan osetshoulder` hookportion .33 whichcooperates with the,

hook portions of its complementary member to.A constitute an -eyelet 34 in which a-fhook sticktnot shown) -of the usual type maygfbe inserted. `for operating the switch bladefanfd,

thellatches. Y f y v. Referring vto 1,1 in order .tot openlthe disconnecting-switch V13, a hook stick is ,in`

.serted `v in `theeyelet 34,and the latch "1'23zis f' pulled outwardly thereby.'V `Movement of the latch 23 withdrawstheushoulder 29 thereof from engagement with theshoulder21 of the .1. switch bladefronrthe contact jaw when :the latchmei'nber k23 is fur-ther pulled outwardly.' As .previously stated, e the outward pivotal movement of the'latch23 is limited by reasonV i of engagement of the shoulder` 32 thereof with Y I itheeXtre-me end yof .theswitch'bladej13.`

`Vh'en the doubleethrow J disconnectingswitchblade `13 `is moved into engagement.

with the lower contact j aw l2, referredto as constituting a part of the disconnecting; .'switch, the latch 24 functionsft'o'retain the. `tionmg member .disposed between the said switchin closed positionwith that jaw. In Fig. I have shown a multiple-blade dlsconnecting switch `which 4comprises a pair of multiple-blade members Aof the type illusA `trated in Figs. land 2.V In the multiple- Ablade construction showninF ig. 3, two,

switch jaws 12. are mounted ontheinsulator 9 in spaced relationk anrdeach is engaged` by a multiple disconnectingl switch bladel simiilar to that shown in Fig.` 1. A single bolt`l7 serves to tie fthe switch blades-13 inlined spaced relation, and the; latch members 23 and 24 aremounted on a bolt 25thatconnects thefree ends of the blades 153, the latchesbe-y the blades 13, as indi- .Y

V=`ing nmounted between cated in'Fig. 3.

S7 nce the latch members23 24 arenot,

in this case, mounted on opposite sidespofaa` blade 13, but,4 instead,fare mountedbetween :two'fblades 13 that are `spaCedapart, a .posif tioning member 35 (Fi0 fs.` 3 and 6)? is 'prof' vided forthe latch members andis mounted on the bolt-S17 `and 25 in such manner thatit isrigidly supportedb etween the switch :blades aV 1 3, .theqhubs '26 oithe latch` members being The shoulders 32 be yieldingly pressed intoengagement with' disposed on opposite sides of the positioning latch members in the same manner that the free end of the switch blade 13 'of Figs. 1 and `2"serves tolimit movement of theflatc'h members;

By reason of this construction, latch memibersfor a single inul tiple-blade-member disconnecting-switch blade, such as is shown in VFigs.' 1`ai1d`2, may serve to constitute a latch without necessitating any `chan-ge of construction vrinthe design Vof the. latches ,or the blade members 14 that constitute the switch blade 13. Thewolyadditional part required in so adaptingthe latches is the positioning memf' ber 35. VThe lengths ofbo1ts17 and25,how

ever, `must b ef increased 'to accommodate the greater width ofn switch-,blade structure.

While Ithatefillustrated but one em'bodi` ment ,of mylinvention, itwill be apparent to those skilledinthe `art that various changes, modilications, substitutions,l additions and omissions may be made .in the apparatus ilcatch, whiehpermi-ts the withdrawalof the c hub portions adapted* to retain the latch in a predetermined position between the'said switch blades. c

2. A disconnecting switch comprising aswitch, `-}blade fmember, acontact jaw, a catch member .adjacentto the jaW'and apai-r of complementary latches pivotally mounted by a fsinglepi-vot means on theblade member andhaving overlapping-hook portions con- `stitutingan.eyelettor receiving a hook stick.

3..- A switch comprising a pair `of spaced switch blades, ya `single shaft connecting said blades, switch jaws'for engaging said blades,

alatch comprising two movable-latch membersjmounted onfsa'id shaft, and al catch for e`iig'gaggging'saidlatch. 'y

In testimony whereof, l havefhereunto subscribed my name this 13th day of Eebruary,

1928. HERBERT'J 'CRABBS 

